Optimized correlation algorithm for enhancing tracking performance in pulsed CW radar

2015 International Conference on Signal Processing and Communication Engineering Systems Pub Date : 1900-01-01 DOI:10.1109/SPACES.2015.7058256

V. Janarthanan, P. Venkataramana, P. Bhargavi, M. Suresh, J. G. Krishna

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Abstract

Tracking performance of Radar is characterized by its Accuracy and maximum tracking range. Both of the parameters depend on the Signal to Noise Ratio (SNR) of the received signal. Improving the SNR of the received signal by using some signal processing techniques enhances the performance of the radar without any changes to the other subsystems of the Radar. There are various signal processing algorithms among which correlation and pulse integration are very popular and widely used. These algorithms should be implemented using suitable hardware to process the received signal in real time. The deadlines available for such processing are of the order one to two milli seconds. Therefore implementation of any signal-processing algorithm in real time is very critical and challenging. In this paper we propose design and implementation of an optimized correlation algorithm (correlator) with minimum computation time and hardware resources for a pulsed Continuous Wave (CW) radar using Field Programmable Gate Array (FPGA). Improvement in the radar tracking performance using this correlator is also presented.

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为提高脉冲连续波雷达跟踪性能，优化了相关算法

雷达跟踪性能的特点是精度和最大跟踪距离。这两个参数取决于接收信号的信噪比(SNR)。利用一些信号处理技术提高接收信号的信噪比，在不改变雷达其他子系统的情况下提高雷达的性能。信号处理算法有很多种，其中相关和脉冲积分是比较流行和应用广泛的。这些算法应该使用合适的硬件来实时处理接收到的信号。这种处理的截止时间大约是1到2毫秒。因此，任何信号处理算法的实时实现都是非常关键和具有挑战性的。本文提出了一种基于现场可编程门阵列(FPGA)的脉冲连续波雷达的优化相关算法(相关器)的设计和实现，该算法的计算时间和硬件资源最少。文中还介绍了该相关器对雷达跟踪性能的改善。

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2015 International Conference on Signal Processing and Communication Engineering Systems

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